Patents by Inventor Keng-Yin Sun

Keng-Yin Sun has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Media feeder
    Patent number: 6109604
    Abstract: A paper feeder comprises a control unit; a pair of side plates; a feed module having two or more separate feed rollers; a transport module having two or more separate transport rollers; a pusher module having a belt assembly and at least one pusher roller disposed under the belt assembly, the belt assembly further having two or more parallel shafts and two or more belts each having a protrusion and fitted on the shafts, the protrusions corresponding to each other; a first driving mechanism having a first motor and a first transmission mechanism, the first motor being connected to the first transmission mechanism which is in turn connected to at least one of the feed rollers; a second driving mechanism having a second motor and a second transmission mechanism, the second motor being connected to the second transmission mechanism which is in turn connected to at least one of the pusher rollers; a third driving mechanism having a third motor and a third transmission mechanism, the third motor being connected to
    Type: Grant
    Filed: April 7, 1999
    Date of Patent: August 29, 2000
    Assignee: Macro Technology International Inc.
    Inventors: Mosi Chu, Keng-Yin Sun